Water-filter



s. H. BELLOWS. Water Filter.

No. 239,595. Patented April 5-,188lj.

Mwentow 6H 356:0 m s 52 m2, SM.

N PETERS. PKOTO-LITHOGRAPMER WASHINGTON. Dr C.

UNITED STATES PATENT OFFICE;-

STEPHEN H. BELLOWS, OF ATHOL, MASSACHUSETTS.

WATER- FILTER.

SPECIFICATION formingpart of Letters Patent No. 239,595, dated April 5,1881.

" Application filed February 14,1880.

To all whom it may concern Beit known that I, STEPHEN H. BELLOWS, ofAthol, in the county of Worcester and State of Massachusetts, haveinvented certain new and useful Improvements pertaining to aWater-hilter, of which the following is a description, reference beinghad to the accompanying drawings, where- Figure l is a view of a filterembodying my improvements, in central vertical longitudinal section.Figs. 2 and 5 are top and side views of the sectional nut made use of.

My invention is an improvement upon that kind of filtering apparatuswhich has an airchamber appurtenant to the water-pipe, with a filterbetween the pipe and chamber and a faucet each side of the filter,through one of which unfiltered water can be drawn, and through theother of which filtered water can be drawn.

The letter a denotes the casing of the filter ing apparatus-a verticalcylinder in shape.

The letter b denotes. the inlet-pipe, which enters at the side of thecasing to, and has a port, c,opening toward the portal. This port d isthe one through which unfiltered water is drawn, and it is also the portwhich is used when it isdesired to clean the packing or filter proper.

The'letterf denotes a valve for port 01 borne by nozzle 9, (through themedium of spiderarms h,) which nozzle is interiorly threaded, and screwsupon the exteriorly-threaded portion of the casingu. It is obvious thatby rotating this nozzle on the casing the valve f may be made to openand close the port cl.

Within the casing, and just above pipe b, is a shoulder, 2', on whichlies the strainer-disk j, and on this disk lies the packing 70,preferably one or more thicknesses of felt. On the packing lies theupper strainer-disk, 9". The packing and the two disks are held in placeby the basket 1, consisting of an exteriorly-threaded annulus at itsupper end,,havin g arms reaching down, and hearing at the lower endanother annulus, which bears upon the upper strainer-disk. Theexteriorlythreaded portion screws into an interiorly-threaded portion ofthe casing. This peculiar construction of this basket or basket-nutbrings the said interior thread of the casing to a position where it canbe conveniently cut, and at the same time allows the water to passfreely through the nut to the air-chamber above, and also allows thewater to pass out through the sides of the nut to the filteredwater-port.

The letter at denotes an air-chamber, preferably of glass, the neck ofwhich bears the collar m. This collar (there being a packing-ringintervening) rests on the shoulder 0, made within the casing, and is,with the appurtenant air-chamber, secured to place by the sectional nutn n, a proper packing-ring intervening.

. The letter 10 denotes the outlet-pipe, and 1) denotes the port throughwhich filtered water is drawn.

7' denotes the valve for this port borne, through the medium ofspider-arms, on the nozzle .9, which is interiorly threaded and screwsupon the exteriorly-threadecl portion of pipe 19.

The letter t denotes a removable reducingplug fitting into inlet-pipe b,with a hole, t, through it for the passage of water. This central holeis to be made smaller or larger inversely, as the water-pressure isgreater or less, to retard the sudden rush of water which wouldotherwise occur when a discharge-port is first opened under a greathead. It is a simple and cheap device for this purpose, so located thatit cannot be readily tampered with by careless or designing persons.

Supposing the ports 01 p to be closed, water entering the casing throughport 0 will rise, and, passing through the packing, will be filtered,and, according to the head or pressure, will fill more or less space inthe air-chamber. Now, by opening port p, filtered water may be drawn. Byopening port d, port 10 being closed, not only may unfiltered water bedrawn, but the water in the air-chamber will be forced and drawn downthrough the packing, and the packing will thereby be cleansed of itsimpurities with filtered water. The construction hereinbeforeindicated-i. 0., having the port 0 opening toward the port cl-has apeculiar value in this connection. In other apparatus the air-chamberand prevent water from passing from the air-chamber through the packingto cleanse it. By having port 0 so located with reference to port 01 asto direct the cur-' rent toward port d, I do not have to rely upon theair-chamber pressure Wholly,-for the current passing from port 0 to portat has a suctorial influence on the water in the air-chamber.

I claim as my invention 1. In combination, the casing 11, having theoutlet-ports (Z 1), the inlet-pipe I), having the port 0, directing theincoming current toward port d, the filter 7c, and the air-chamber m,all substantially as described.

2. The combination of the casin g a, bearing shoulder t, and pipe 19,the filter k, and the basket-nut Z, all substantially as shown anddescribed.

3. In combination, the casing at, having the interior shoulder, 0, theair-chamber m, having the collar on, and the nut n n, all substantiallyas shown and described.

4. The combination, with the filter-chamber and layers of felt orequivalent material placed Within said chamber, of a glass air-chamberand means for securing its neck within the filter-casing, andintervening follower or followers for retaining the filtering materialagainst vertical displacement.

5. The combination, with the filter-chamber, of a discharge-valvelocated below the same, and a supply-pipe extending within thedischarge-chamber.

STEPHEN H. BELLOVS.

Witnesses:

W. E. SIMONDS, R0131. I GAYLORD.

